Home / 20,885.84-28,823.99-11,933.15

Finding the Fourth Proportional to 20,885.84, 28,823.99 and 11,933.15

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Solution

The fourth proportional to 20,885.84, 28,823.99 and 11,933.15 is: 16,468.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,885.84 : 28,823.99 = 11,933.15 : x
  2. Step 2: Convert to fraction form
    20,885.84/28,823.99 = 11,933.15/x
  3. Step 3: Cross multiply
    20,885.84x = 28,823.99 × 11,933.15
  4. Step 4: Simplify right side
    20,885.84x = 343,960,936.60
  5. Step 5: Solve for x
    x = 343,960,936.60/20,885.84
  6. Step 6: Final answer
    x = 16,468.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.